package com.tang.managementdemo.mapper;

import com.tang.managementdemo.pojo.Dept;
import org.apache.ibatis.annotations.*;

import java.util.List;

@Mapper
public interface DeptMapper {
    /**
     * 查询所有部门
     */
    @Select("select * from dept")
    public List<Dept> findAll();

    @Delete("delete from dept where id = #{id}")
    void deleteById(Integer id);

    @Insert("insert into dept(name,create_time,update_time) values(#{name},#{createTime},#{updateTime})")
    void add(Dept dept);

    @Select("select * from dept where id = #{id}")
    Dept getById(Integer id);

    @Update("update dept set name = #{name},update_time = #{updateTime} where id = #{id}")
    void updata(Dept dept);

    @Select("select count(e.id) from emp e where e.dept_id = #{id}")
    Integer coutEmpByDeptId(Integer id);
}
